.net HttpClient 回传实体帮助类

     public class HttpClientHelper<T>
     {
         /// <summary>
         /// Get请求  返回实体
         /// </summary>
         /// <param name="url"></param>
         /// <param name="t"></param>
         /// <returns></returns>
         public static T Get(string url, T t)
         {
             HttpClient client = new HttpClient();
             client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
             var result = client.GetAsync(url).Result;
             if (result.IsSuccessStatusCode)
             {
                 string re = result.Content.ReadAsStringAsync().Result;
                 var jo = JObject.Parse(re);
                 JSchema schema = JSchema.Parse(JsonConvert.SerializeObject(t));
                 if (jo.IsValid(schema))
                 {
                     var m = JsonConvert.DeserializeObject<T>(re);
                     return m;
                 }
                 else
                 {
                     return default(T);
                 }
             }
             else
             {
                 return default(T);
             }
         }

         /// <summary>
         /// Get请求  返回string
         /// </summary>
         /// <param name="url"></param>
         /// <param name="t"></param>
         /// <returns></returns>
         public static string Get(string url)
         {
             HttpClient client = new HttpClient();
             client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
             var result = client.GetAsync(url).Result;
             if (result.IsSuccessStatusCode)
             {
                 string re = result.Content.ReadAsStringAsync().Result;
                 return re;
             }
             else
             {
                 return "";
             }
         }

         /// <summary>
         /// Post请求  返回实体
         /// </summary>
         /// <param name="url"></param>
         /// <param name="t"></param>
         /// <returns></returns>
         public static T Post(string url, T t, string json = null)
         {
             var client = new HttpClient();

             var postContent = new StringContent(json, UTF8Encoding.UTF8, "application/json");
              var   result = client.PostAsync(url, postContent).Result;
             if (result.IsSuccessStatusCode)
             {
                 string re = result.Content.ReadAsStringAsync().Result;
                 var jo = JObject.Parse(re);
                 JSchema schema = JSchema.Parse(JsonConvert.SerializeObject(t));
                 if (jo.IsValid(schema))
                 {
                     var m = JsonConvert.DeserializeObject<T>(re);
                     return m;
                 }
                 else
                 {
                     return default(T);
                 }
             }
             return default(T);
         }

         /// <summary>
         /// Post请求  返回string
         /// </summary>
         /// <param name="url"></param>
         /// <param name="t"></param>
         /// <returns></returns>
         public static string Post(string url, string json =null)
         {
             var client = new HttpClient();
             var postContent = new StringContent(json, UTF8Encoding.UTF8, "application/json");
             var result = client.PostAsync(url, postContent).Result;
             if (result.IsSuccessStatusCode)
             {
                 return result.Content.ReadAsStringAsync().Result;
             }
             return null;
         }

     }